Overview
- Mexico’s Frente Frío 18 is bringing rain, mountain snow or sleet and very cold nights in northern sierras, with Frente Frío 19 forecast to arrive Sunday to trigger a sharper temperature drop and a Gulf of Mexico “Norte.”
- Peru’s Senamhi issued a Red Alert for the Andean sierra from December 6–8 due to extreme nighttime cold, and reports the DANA “Qori” will keep Lima under persistent drizzle and near‑saturated humidity through December 8.
- Senamhi also warns of a coastal cool spell from Piura to Ica between December 6–10, with Lima’s nighttime minima around 14–16 °C and cloudy, damp mornings along the shore.
- Argentina’s weather service projects a La Niña‑dominated summer with a 40–50% chance of above‑normal temperatures in many provinces and precipitation deficits in central and litoral regions, while a yellow alert flags strong storms in parts of Buenos Aires province today.
- The U.S. National Weather Service in Chicago expects a clipper pattern to bring 1–3 inches of snow in spots and very cold conditions this weekend, with uncertainty in the exact placement of the heaviest bands.